/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/CollectionPropertyFacade.h
SetFlags cannot be used to remove Dirty or StringDirty flags. Use ClearDirtyFlags to remove dirty flags.
void SetFlags ( int32 KeyIndex, [ECollectionPropertyFlags](API\Runtime\Chaos\Chaos\Chaos__Softs__ECollectionPropert-) Flags )